Conservation Box Sash Windows 2017-09-21T20:26:22+00:00
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We have over twenty years’ experience in making bespoke wooden sash windows and specialise in replacement sash windows for properties in conservation areas.  We can guide you through the process while making the ultimate investment in your cherished period home. 


Our Conservation Sash Windows will retain the charm of your original sash windows.  Everything is tailored to replicate your original sash windows and meet with planning requirementsBespoke glazing bars, puttied glazing, slimline double-glazed units and mouldings combined with the latest advances in thermal insulation, glazing techniques and timber technology ensures superior durability, quality and longevity.



By choosing Whyte & Wood for your new replacement sash windows, you can be assured that this is a once in a lifetime investment.  Our windows are guaranteed not to rot for 50 years because we use Accoya® timber.  Accoya® is a vastly superior wood to laminated timber, timber treated with preservatives, and hardwoods such as oak, teak and mahogany for both durability and stability. It is the only timber in the world that will not naturally shrink, swell or move with moisture.  Authentic crafting and finishing techniques guarantees our products look just like the originals. Enhanced durability and performance is assured with the latest advances in thermal insulation, glazing techniques and timber technology, encapsulating a beautiful heritage appeal that delivers the wow factor to your home. 

  • Fully Bespoke – Everything tailor made in our own workshop
  • No Seasonal Swelling – Effortless opening all year round
  • Colour Match – Choose Farrow & Ball colours or any RAL code
  • Professionally Installed by Us – Trouble free. Flawless finish
  • Longer Lasting Paint Finish – Looks better for longer
  • Low Maintenance – Save time & money on costly repainting
  • Acoustic Grade Weather Seals – Enjoy a quieter, warmer home
  • Reduced Energy Bills – Glass reflects heat back into the room
  • Enhanced Security – Secured by Design Locks

  • High Specification As Standard – Toughened glass throughout

  • Accoya® sashes and external frame. Even the cill is solid Accoya®
  • Accoya® parting beads
  • Ovolo moulding to all internal stiles, rails and glazing bars
  • Slim through-bar glazing with traditional puttied glass
  • Horns to match existing
  • Pre-stretched nylon cords and counter balanced weights
  • Where possible – factory fitted double glazed Slimlite unit constructed with low emivisity glass. Alternatively – 4mm Single toughed glass sheet
  • Drainage holes (allows the glass unit to breathe, increasing its lifespan)
  • Factory finished, 3 coats spray applied white micro-porous paint
  • Draught proofed with Schlegel Q-Lon for maximum thermal and acoustic performance
  • Key locking ‘Secured by Design’ catch, Sash Locks & Restrictors
  • Ironmongery: Ball bearing pulleys, sash lifts and/or D handles
  • FSC® certified timber
  • CE Marked EN 14351-1 + A1:2010
  • Fully compliant with building control regulations
  • 1.6 W/m2K whole window U Value
  • Market Leading Quality – ALL aspects in solid Accoya™
  • Traditional Period Features – With high performance materials
  • Durable Construction – Traditional mortice & tenon joints
  • Maximum Stability – Resistant to seasonal shrinking and swelling
  • Low Maintenance – Unrivalled longer lasting paint finish
  • Superior Longevity – 50 Year Timber Guarantee
  • Total Peace of Mind – Comprehensive underwritten warranties
  • Deposit Protection Insurance
  • Underwrittern Warranty
  • Surveys
  • Drawings
  • Liaisons with your architect, builder, interior designers
  • Delivery
  • Installation
  • Old window removal and recycling
  • Horn design
  • Your choice of colour for inside and/or outside spray applied in our paint shop
  • Choice of mouldings
  • Glazing configuration

As standard the inner pane of our double glazed units will reflect heat back into the room and we offer a range of glass options for the outer pane of the double glazed unit. If you have a specific need not listed speak to us to see how we can help.

  • Laminated glass to eliminate 99% of UV rays which damage fabrics in your home
  • Laminated glass for additional security
  • 6.4mm or 8.8mm Acoustic glass to make your home quieter
  • Self-cleaning glass for hard to reach windows
  • Range of decorative and obscured glass
  • Leaded glass

All our Box Sash Windows are bespoke and made specifically for you so call us on 01753 415 753 to see how we can tailor our windows to suit your needs. 





“Professional service from quote to installation. Windows look fantastic – they have transformed the front of our house. Attila was also a pleasure to have in our house to fit them – always polite and the quality of fitting was second to none. An asset to your company.”

Andrew, London, June 2015

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